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Command Values Description
T In Dial Comd. Modem will tone-dial numbers following
the T.
&Tn n = 4 or 5 &T4 means Enable Response to Request for
Remote Digital Loopback.
*&T5 means Disable Response to Request
for Remote Digital Loopback.
#Tn n = 0 or 1 #T0 turns off Trellis Coded Modulation
*#T1 turns on Trellis Coded Modulation
Un n = 0, 1, 2, or 3 U0 places modem in Analog Loop
Originate Mode.
U1 places modem in Analog Loop Answer
Mode.
U2 places modem in Remote Digital
Loopback test mode.
U3 places modem in Local Digital
Loopback test mode.
$VDn n= 0 or 1 *$VD0 disables Voice/Data Dialing
$VD1 enables Voice/Data Dialing
Vn n = 0 or 1 V0 means Result Codes sent as digits (terse
response).
*V1 means Result Codes sent as words
(verbose response).
#Vn** n = 0 or 1 #V0 enables V.32terbo handshaking process
#V1 disables V.32terbo handshaking process
W In Dial Comd. Wait for new dial-tone.
&Wn n = 0 or 1 &W0 causes modem to store its current
parameters in non-volatile RAM, and
modem will load these for future sessions
instead of reading factory ROM defaults,
unless &F command used.
*&W1 causes modem to not store
parameters.
* Factory Default Setting
** 336 Model (MD1641A) Only
APPENDIX C: Command Summary